Would You Stop Your Neighbour Sacrifising His Son To God?

Your neighbour claims to be in communion with god and also claims to have had a command from god ordering him to sacrifice his son. He is make preparation to perform the act. What would you do?

1)  Do nothing
2) Inform the authorities
3) Wait in anticipation for the act (afterall he is in a 1-2-1 with god)
4) Join him is the sacrificial act


See also http://www.nairaland.com/nigeria/topic-141283.0.html

The events of Jesus sacrificing himself for the sins of man in the New Testament means that man was no longer required to make sacrifices to God, as Jesus made the ultimate sacrifice. For the neighbor to claim today that he received an order from God to sacrifice his son, he is obviously 1) Hallucinating, 2) Psychotic, or 3) Insane. Either one makes him unfit as a parent, and the authorities would have to be notified. He is NOT directly communicating with God, and should seek help.